linux-toradex.git/include/linux/cpuhotplug.h, branch v4.8-rc1

timers/core: Correct callback order during CPU hot plug

2016-07-28T16:56:22+00:00

On the tear-down path, the dead CPU callback for the timers was
misplaced within the 'cpuhp_state' enumeration.  There is a hidden
dependency between the timers and block multiqueue.  The timers
callback must happen before the block multiqueue callback otherwise a
RCU stall occurs.

Move the timers callback to the proper place in the state machine.

Reported-and-tested-by: Jon Hunter 
Reported-by: kbuild test robot 
Fixes: 24f73b99716a ("timers/core: Convert to hotplug state machine")
Signed-off-by: Richard Cochran 
Cc: Peter Zijlstra 
Cc: Sebastian Andrzej Siewior 
Cc: Rasmus Villemoes 
Cc: John Stultz 
Cc: rt@linutronix.de
Cc: Oleg Nesterov 
Cc: Linus Torvalds 
Link: http://lkml.kernel.org/r/1469610498-25914-1-git-send-email-rcochran@linutronix.de
Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar

leds/trigger/cpu: Move from CPU_STARTING to ONLINE level

2016-07-22T19:53:18+00:00

There is no need the ledtriger to be called *that* early in the hotplug
process (+ with disabled interrupts). As explained by Jacek Anaszewski [0]
there is no need for it.
Therefore this patch moves it to the ONLINE/PREPARE_DOWN level using the
dynamic registration for the id.

[0] https://lkml.kernel.org/r/578C92BC.2070603@samsung.com

Signed-off-by: Sebastian Andrzej Siewior 
Acked-by: Jacek Anaszewski 
Acked-by: Linus Walleij 
Cc: Peter Zijlstra 
Cc: Paul Gortmaker 
Cc: Richard Purdie 
Cc: rt@linutronix.de
Cc: Linus Torvalds 
Cc: linux-leds@vger.kernel.org
Link: http://lkml.kernel.org/r/1469028295-14702-1-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner

powerpc/numa: Convert to hotplug state machine

2016-07-22T19:53:17+00:00

Install the callbacks via the state machine. On the boot cpu the callback is
invoked manually because cpuhp is not up yet and everything must be
preinitialized before additional CPUs are up.

Signed-off-by: Sebastian Andrzej Siewior 
Cc: Nikunj A Dadhania 
Cc: Peter Zijlstra 
Cc: Benjamin Herrenschmidt 
Cc: Bharata B Rao 
Cc: Raghavendra K T 
Cc: Linus Torvalds 
Cc: Christophe Jaillet 
Cc: Anton Blanchard 
Cc: Michael Ellerman 
Cc: Paul Mackerras 
Cc: Andrew Morton 
Cc: linuxppc-dev@lists.ozlabs.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160718140727.GA13132@linutronix.de
Signed-off-by: Thomas Gleixner

ARC/time: Convert to hotplug state machine

2016-07-15T08:41:46+00:00

Install the callbacks via the state machine.

Signed-off-by: Anna-Maria Gleixner 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: Vineet Gupta 
Cc: linux-snps-arc@lists.infradead.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153338.391826254@linutronix.de
Signed-off-by: Ingo Molnar

clocksource/atlas7: Convert to hotplug state machine

2016-07-15T08:41:45+00:00

Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Richard Cochran 
Signed-off-by: Anna-Maria Gleixner 
Reviewed-by: Sebastian Andrzej Siewior 
Cc: Barry Song 
Cc: Daniel Lezcano 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153338.310333816@linutronix.de
Signed-off-by: Ingo Molnar

clocksource/armada-370-xp: Convert to hotplug state machine

2016-07-15T08:41:45+00:00

Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Richard Cochran 
Signed-off-by: Anna-Maria Gleixner 
Reviewed-by: Sebastian Andrzej Siewior 
Cc: Daniel Lezcano 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153338.229913786@linutronix.de
Signed-off-by: Ingo Molnar

clocksource/exynos_mct: Convert to hotplug state machine

2016-07-15T08:41:44+00:00

Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Richard Cochran 
Signed-off-by: Anna-Maria Gleixner 
Reviewed-by: Sebastian Andrzej Siewior 
Cc: Daniel Lezcano 
Cc: Krzysztof Kozlowski 
Cc: Kukjin Kim 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-samsung-soc@vger.kernel.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153338.147940411@linutronix.de
Signed-off-by: Ingo Molnar

clocksource/arm_global_timer: Convert to hotplug state machine

2016-07-15T08:41:44+00:00

Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Richard Cochran 
Signed-off-by: Anna-Maria Gleixner 
Reviewed-by: Sebastian Andrzej Siewior 
Cc: Daniel Lezcano 
Cc: Linus Torvalds 
Cc: Maxime Coquelin 
Cc: Patrice Chotard 
Cc: Peter Zijlstra 
Cc: Srinivas Kandagatla 
Cc: Thomas Gleixner 
Cc: kernel@stlinux.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153338.062741642@linutronix.de
Signed-off-by: Ingo Molnar

rcu: Convert rcutree to hotplug state machine

2016-07-15T08:41:44+00:00

Straight forward conversion to the state machine. Though the question arises
whether this needs really all these state transitions to work.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Anna-Maria Gleixner 
Reviewed-by: Sebastian Andrzej Siewior 
Cc: Linus Torvalds 
Cc: Paul E. McKenney 
Cc: Peter Zijlstra 
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153337.982013161@linutronix.de
Signed-off-by: Ingo Molnar

KVM/arm/arm64/vgic-new: Convert to hotplug state machine

2016-07-15T08:41:43+00:00

Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.

Signed-off-by: Anna-Maria Gleixner 
Cc: Andre Przywara 
Cc: Christoffer Dall 
Cc: Eric Auger 
Cc: Linus Torvalds 
Cc: Marc Zyngier 
Cc: Paolo Bonzini 
Cc: Peter Zijlstra 
Cc: Radim Krcmar 
Cc: Thomas Gleixner 
Cc: kvm@vger.kernel.org
Cc: kvmarm@lists.cs.columbia.edu
Cc: linux-arm-kernel@lists.infradead.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153337.900484868@linutronix.de
Signed-off-by: Ingo Molnar